package com.qimalocl.manage.core.common;

import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class BitmapUtils1 {

	/**
	 * 质量压缩方法
	 * 
	 * @param image
	 * @return
	 */
	private static Bitmap compressImage(Bitmap image) {

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
		int options = 100;
		while (baos.toByteArray().length > 2097152) {
			baos.reset();
			image.compress(Bitmap.CompressFormat.JPEG, options, baos);
			options -= 100;
		}
		ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
		Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);
		return bitmap;
	}

	/**
	 * 图片按比例大小压缩方法（根据路径获取图片并压缩）
	 * 
	 * @param srcPath
	 * @return
	 */
	private static Bitmap getImage(String srcPath,float ww,float hh) {
		BitmapFactory.Options newOpts = new BitmapFactory.Options();
		newOpts.inJustDecodeBounds = true;
		Bitmap bitmap = BitmapFactory.decodeFile(srcPath, newOpts);// 此时返回bm为空

		newOpts.inJustDecodeBounds = false;
		int w = newOpts.outWidth;
		int h = newOpts.outHeight;
//		// 现在主流手机比较多是800*480分辨率，所以高和宽我们设置为
//		float hh = 800f;// 这里设置高度为800f
//		float ww = 480f;// 这里设置宽度为480f
		// 缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
		int be = 1;// be=1表示不缩放
		if (w > h && w > ww) {// 如果宽度大的话根据宽度固定大小缩放
			be = (int) (newOpts.outWidth / ww);
		} else if (w < h && h > hh) {// 如果高度高的话根据宽度固定大小缩放
			be = (int) (newOpts.outHeight / hh);
		}
		if (be <= 0)
			be = 1;
		newOpts.inSampleSize = be;// 设置缩放比例
		// 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
		bitmap = BitmapFactory.decodeFile(srcPath, newOpts);
		return compressImage(bitmap);// 压缩好比例大小后再进行质量压缩
	}

	/**
	 * 将压缩的bitmap保存到SDCard卡临时文件夹，用于上传
	 * 
	 * @param filename
	 * @param bit
	 * @return
	 */
	@SuppressLint("NewApi")
	private static String saveMyBitmap(String filename, Bitmap bit) {
		String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath() + "/laopai/";
		String filePath = baseDir + filename;
		File dir = new File(baseDir);
		if (!dir.exists()) {
			dir.mkdir();
		}

		File f = new File(filePath);
		try {
			f.createNewFile();
			FileOutputStream fOut = null;
			fOut = new FileOutputStream(f);
			bit.compress(Bitmap.CompressFormat.PNG, 100, fOut);
			fOut.flush();
			fOut.close();
		} catch (IOException e1) {
			e1.printStackTrace();
		}

		return filePath;
	}

	/**
	 * 压缩上传路径
	 * 
	 * @param path
	 * @return
	 */
	public static String compressImageUpload(String path,float ww,float hh) {
		String filename = path.substring(path.lastIndexOf("/") + 1);
		Bitmap image = getImage(path,ww,hh);
		return saveMyBitmap(filename, image);
	}

	/**
	 * 清除缓存文件
	 */
	public static void deleteCacheFile() {
		File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/laopai/");
		RecursionDeleteFile(file);
	}

	/**
	 * 递归删除
	 */
	private static void RecursionDeleteFile(File file) {
		if (file.isFile()) {
			file.delete();
			return;
		}
		if (file.isDirectory()) {
			File[] childFile = file.listFiles();
			if (childFile == null || childFile.length == 0) {
				file.delete();
				return;
			}
			for (File f : childFile) {
				RecursionDeleteFile(f);
			}
			file.delete();
		}
	}
}
